So I'm pretty new to carb bikes, I used to have a CBR-600rr and decided I wanted a supermoto. I have read the repetitive topics concerning leaving your bike on prime but no answer as to why my bike is ok, everyone seems to have problems.
One day I was in the trails and my bike tipped over and wouldn't start, so I set the pet cock to prime and it started fine and I rode/left it sitting like that for 3 weeks because I went to Florida. When I came back I shit myself when I noticed I left it on prime, the bike wouldn't start but was cranking. Eventually I killed the battery trying different choke settings and decided to try to push start it and it started right up. It wasn't idling high like the choke setting was set to but after riding it around for the day it was fine. I let it cool and it started fine.
Why does my bike seem ok after what is supposed to be a horrible mess up? Does anyone know the science behind why it wouldn't start at all choked but started fine when I pushed it?
What is the best option for a quality oversized tanks that fits with the least amount of mods for a 2013 SM with FCR39 that already has the high clearance choke.
I plan to do the aftermarket petcock at the same time, any issues with fitment of the petcock and oversized tank?
Thanks for the help.
Just rebuilt the carb on my 1980 Suzuki TS250 and when I took it apart I noticed the tab on the float that contacts the needle was bent in a way that would force the needle to close. I think the guy I bought the bike from did this in an attempt to stop gas from running all over his garage when he forgot to shut the pet cock off. The problem is that I wasn't getting gas to run down the fuel line fast enough to run the engine continuously. It usually will run for 4ish miles before it starts to chug and eventually die. So I tried to solve the problem... so I bent the tab flush with the rest of the bracket that holds the floats thinking this would allow the needle to separate from the seat and allow gas flow into the carb breaking the vacuum that is preventing the gas from flowing. However this did not fix the problem completely. I know there is no gas because I have a clear fuel filter installed. I am now wondering if I have an issue with the petcock not allowing gas to flow out or the carb is making a vacuum that won't allow gas to flow down the fuel line and reach the carb. The problem isn't the fuel filter restricting flow because there isn't gas getting into the filter. Also, I don't have a vacuum line attached to my petcock. Any ideas would be greatly appreciated. Thanks.
I just did the raptor petcock mod and had a quick question.
Running an FCR39 what happens if one night I forget to turn it to the off position?
Here is the petcock I bought. So far I really like it.
Yamaha FUEL COCK ASSY 1 (5LP-24500-01-00)
Thanks for the help.